# 2.14: Points in the Coordinate Plane

Difficulty Level: At Grade Created by: CK-12
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Practice Points in the Coordinate Plane

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### Vocabulary Language: English

TermDefinition
$x-$axis The $x-$axis is the horizontal axis in the coordinate plane, commonly representing the value of the input or independent variable.
$y$ axis The $y$-axis is the vertical number line of the Cartesian plane.
Abscissa The abscissa is the $x-$coordinate of the ordered pair that represents a plotted point on a Cartesian plane. For the point (3, 7), 3 is the abscissa.
Cartesian Plane The Cartesian plane is a grid formed by a horizontal number line and a vertical number line that cross at the (0, 0) point, called the origin.
Coordinate grid The coordinate grid is formed by a horizontal number line and a vertical number line that cross at the (0, 0) point, called the origin. The coordinate grid is also called a Cartesian Plane or coordinate plane.
Coordinate Plane The coordinate plane is a grid formed by a horizontal number line and a vertical number line that cross at the (0, 0) point, called the origin. The coordinate plane is also called a Cartesian Plane.
Coordinates The coordinates of a point represent the point's location on the Cartesian plane. Coordinates are written in ordered pairs: $(x, y)$.
Ordered Pair An ordered pair, $(x, y)$, describes the location of a point on a coordinate grid.
Ordinate The ordinate is the $y$-coordinate of the ordered pair that represents a plotted point on a Cartesian plane. For the point (3, 7), 7 is the ordinate.
Origin The origin is the point of intersection of the $x$ and $y$ axes on the Cartesian plane. The coordinates of the origin are (0, 0).

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